Sentence examples for proved difficult to define from inspiring English sources

5, 6 Sarcopenia has proved difficult to define.

The role of health care proved difficult to define.

However, it proved difficult to define both main course "types" and specific dishes.

The principle that TCR sequence correlates with function is accepted in the special case of the Treg versus Teff TCR repertoires [ 47], although even in this setting, phenotypic differences have proved difficult to define [ 48].

For example, it has proved difficult to define, operationalise and demarcate the aspects of treatment of interest with the result that inter-rater reliability has been less than satisfactory (e.g., Jacobson & Gortner, 2000).

But Stephanie Merritt, in the Observer, said: "Emily Barton's remarkable first novel proves difficult to define; it straddles genres while possessing a curious familiarity, reminiscent at times of Swift and Peake, set against the landscape of a Brueghel painting".

Among the most calamitous of possibilities is an Iraqi strike on Israel either by missile or by orchestrated terrorism, which could provoke a ghastly escalation.In the end, victory may prove difficult to define.

Excellence and transformational are over-used techno-bureaucratic terms that may prove difficult to define and measure.

The precise beginning and end of the case may however prove difficult to define.

The role of the OT nurse has proven difficult to define and there is pressure from within the profession to do so [ 29- 31].

However, given the heterogeneity of perfusion values as observed in the present study, it may prove difficult to define an optimal cut-off value for diagnostic accuracy.